[time-nuts] Trimble Mini-T end of life
Mark Spencer
mspencer12345 at yahoo.ca
Fri Jul 20 02:03:08 UTC 2012
Just wondering about the internal 3.3 volt antenna supply. A switchable 3.3 or 5 volt supply would be nice. Antennas such as the Symmetricom 58532A still want 5 volts. Also if possible a waas only hold over mode would be nice (sorry I don't know if this is feasible or not.)
Sent from my iPad
On 2012-07-19, at 3:33 PM, SAIDJACK at aol.com wrote:
> Hi guys,
>
> thanks so much for all the great suggestions on how to make this product
> better!
>
> Yes, cost targets are a very important goal here, and we are looking into
> adding options that make sense for most customers and don't add excessive
> cost or delay to the schedule. We definitely will improve the performance of
> the unit over the original Mini-T though, because we feel that the Mini-T
> had sub-par performance on many fronts, and don't want to make the same
> mistakes. Some of the improvement items we have already decided upon are:
>
> * 50 channels GPS with WAAS/EGNOS/MSAS and Position-Hold mode with
> automatic initialization of the Auto-Survey process by default. Alternatively, the
> unit can be put into mobile mode, with Auto-Kalman filter optimization
> depending on vehicle velocity. -160dBm GPS tracking capability
>
> * A secondary 10MHz output (SMA or SMB connector, only the connector needs
> to be stuffed onto the PCB) to have access to the +13dBm output signal
>
> * Internal +3.3V antenna supply, that is automatically over-driven by the
> externally applied antenna supply
>
> * USB connector for command/control, RS-232 option, and TTL serial port for
> legacy compatibility
>
> * RoHs 6/6 for compatibility, and RoHs 5/6 option for much longer life and
> better MTBF than Mini-T
>
> * more than 3x better thermal stability, and at the same time more than
> double the temperature range (+/-5ppb over -40C to +85C versus +/-10ppb from
> only 0C to +60C) standard, and DOCXO option for even higher thermal
> stability performance and low-g sensitivity/ruggedized crystal options.
>
> * Better phase noise
>
> * Status LED's on board
>
> * TTL lock/ALARM indicator
>
> * External 1PPS input option on unused pin 1 of the main connector
>
> * Fully field-upgradable firmware, no FPGA programmer needed
>
> * Support for NMEA and SCPI commands
>
> * 3-axis accelerometer built-in
>
> * lower height: 0.47 inches OCXO height versus 0.75 inches
>
> * Much better ADEV performance
>
> * Factory-testing for crystal-jumps on every unit
>
> We also had several folks ask for alternative frequency outputs, and are
> currently investigating if we could use the secondary 10MHz connector to add
> another VCXO to generate any output frequency from 10MHz to 120+MHz such as
> is done on our ULN-1100 boards. This would add some cost though, and may
> just end up in a secondary version of the board so that customers who don't
> need it won't have to pay for it..
>
> The most important item to get feedback on is the TSIP port, we cannot
> implement the entire TSIP command set as this is quite complex, most customers
> probably only use a handful of actual commands, and we believe the
> SCPI/NMEA command/control/status interface is much superior over the proprietary
> binary TSIP port.
>
> We are however open to implement a couple of useful and common TSIP
> outputs, and would greatly appreciate feedback and suggestions on this, for
> example a minimum set to make Lady Heather work..?
>
> Thanks,
> Said
>
>
> In a message dated 7/19/2012 13:41:07 Pacific Daylight Time, wb6bnq at cox.net
> writes:
>
> Hi Said,
>
> I know everyone is going to ask for the kitchen sink to be thrown in.
> BUT, how about
> just making a replacement that does exactly the same job with no added
> thrills ?
> That way your spending the least amount to produce a product and keeps the
> cost down
> to the customer which may cause them to want to keep designing with that
> particular
> product.
>
> just saying........
>
> Bill....WB6BNQ
>
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